321713730100765 has 24 divisors (see below), whose sum is σ = 398915886801240. Its totient is φ = 249066039288960.

The previous prime is 321713730100669. The next prime is 321713730100781. The reversal of 321713730100765 is 567001037317123.

It can be written as a sum of positive squares in 4 ways, for example, as 174769536921849 + 146944193178916 = 13220043^2 + 12122054^2 .

It is a de Polignac number, because none of the positive numbers 2^k-321713730100765 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 533577447 + ... + 534180043.

It is an arithmetic number, because the mean of its divisors is an integer number (16621495283385).

Almost surely, 2^{321713730100765} is an apocalyptic number.

It is an amenable number.

321713730100765 is a deficient number, since it is larger than the sum of its proper divisors (77202156700475).

321713730100765 is a wasteful number, since it uses less digits than its factorization.

321713730100765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713773 (or 713742 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 46.

Adding to 321713730100765 its reverse (567001037317123), we get a palindrome (888714767417888).

The spelling of 321713730100765 in words is "three hundred twenty-one trillion, seven hundred thirteen billion, seven hundred thirty million, one hundred thousand, seven hundred sixty-five".